Hypodermic syringe



July 29, 1924. 1503220 J. H. WEDIG flYPc-nsamc SYRINGE Filed Feb. 21 1923 L4 4K 3 Jh 92 Guam Patented July 29, K

UNITED STATES PATENT, orrics.

mm: a. warm, or oam'rn cm, rumors monnmnc more.

Application flea February 21, ms. Serial Io. 690,408.

To all whom it may comm: contained parts being shown in Fig. 4. The Be it known that I, JOHN H. Wnoro, latter portion is provided at one end with a a citizen of the United States residing at closure 8 cemented therein and contaiuin Granite City, in the county of Madison and a cannula needle 9 in the chamber forms State of Illinois, have invented certain new by the end 6. The opposite end of the and useful Improvements in Hypodermic main portion contains a iston 10 having Syringes, of which the following is a speci- 'a plunger 11, preferably ollow and conficattion. taining at its. outer end a cushion 12 of This invention relates to certain new and rubber, cork or other suitable material ee- 10 useful improvements in hypodermic syrmented therein as shown in. Fig. 1. When inges, the peculiarities of which will be the tube 5 is fractured on the lane.2-2, hereinafter fully described and claimed. this end is exposed so that the p anger and The main oblect of my invention is to piston may be drawn out. The part of the support yieldingly a fragile hermetically tube having the end 7 contains a cushion sealed tube with contained medicament in a 13 located near the end 7, and at such a larger hermetically sealed tube adapted to predetermined distance from the plunger constitute a hypodermic syringe when fraccushion 12, that an inner tube 14 having tured at redetermined points and charged ampullate ends 15 and 16 and hermetically by trans er of the contents of the smaller sea ed, can be sup orted' by said ends in 20 tube thereinto. recesses in said cus ions 13 and 12 respec- In the accompanying drawing on which tively, as shown in Fi 1. When the tube 7 like reference numerals indicate corres ndis fractured at 2-2, e adjacent end poring parts, Fig. 1 represents a central on tion is opened and the saidtube 14 readil tudinal sectional view of a device exemp iremoved therefrom as shown in Fig. 26 fying my invention- Fig. 2, a side view Thisinner tube containsamedicament prefof one end detached rom the main portion; erably in form of a liquid, which bein Fig. 3, a similar view of the other end of hermetically sealed therein, and containe said device with ahermetically sealed medicin the outer hermetically sealed tube 5, is ament tube indicated therein; Fig. 4, a protected from fracture till removed. The so similar-view of the main portion orming ,said tube 14 can then be easily broken at the barrel of a h ermic syringe and its its fragile ends on the lines 3-3 and 4-4 contained parts; i 5, a similar view of Fi 6, and its contents emptied into the upa plunger removed om the main portion; ended 6, a similar view of the hermetically trated in Fig. 7. The size of the tube 14 ed medicament chamber with ampullate causes the liquid or medicament to adhere ends; and Fig. 7, illustrating the transfer to the inner walls when but one end is fracof a medicament from the ampullary tube tured, but when the upper end is fractured to the main portion of the device. as shown in Fig. 7, the contents are readily The numeral 5 designates a tube of glass discharged into the syringe, and the plungor other suitable material having hermeter piston being inserted artially and the ically sealed ends 6 and 7 and adapted to be air and a drop or two o the liquid being fractured at predetermined points, such as expressed when the needle is pointed upthe planes 1-1- and 2-2 indicated b ward, the hypodermic syringe is ready for scratches or partially cut circumferenti use.

lines at such in so that fracture may I cla 1m: readily take ace w on desired. When the A device of the character described comtube 18 fractured at the two planes menprising a hermetically sealed tube forming tioned, three s are formed of the tube a chamber adapted to be fractured at two 5,-one part avinglthe end 6 and being predetermined points into three parts,- go shown in Fig. 2, t e opposite end being the main partadapted to form the barrel shown in Fig. 3, and the main portion wit of a syringe having a cannula needle mountmain portion of the tube 5 as il1us-= ed in a. fixed closure at one end and exposion mounted in the adjacent end of the device ing at the other end a; plunger provided with res ectively, before fracture, substantially a. cushion recess in its exposed end, a hermetas escribed. 10 t, ically sealed tube forming a. medicament In testimony whereof I have aflixed my 5 chamber having fragile ampullate ends signature. v

adapted to be ieldinfily supported in the cushion recess 0 said p unger and by afcush- OHN H. WED IG. 

